Malicious PDF — malware analysis report

Static analysis result for SHA-256 01122426c39cd44a…

MALICIOUS

PDF

67.0 KB Created: 2020-11-23 23:43:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c90ba21b83dd6301c73e9ff9946d9b01 SHA-1: 1f4a0c06ec6a0396c33e1ddfff014791b94e5b8b SHA-256: 01122426c39cd44a009a24a56014c2c21e9c27b5c97fa58e045454d0c5e6fd2c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/strik?utm_term=chemistry+study+material+for+iit+jee+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386091/normal_5f9e39d6518ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5f8f05eda5321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456135/normal_5fb5b6d9abac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483388/normal_5faff58630fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375195/normal_5f9e6d954d724.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b83a205-1a54-4495-ab16-b5c10d181859/72010743959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64a16ef8-5a6d-4619-848e-bedef5a80926/87822450469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39b66d79-6612-46c4-adfd-c932e83dd38c/90826123258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b47a294-3638-45be-bdc9-29d34c928084/melee_20xx_4._06.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07e4ece5-8010-4901-8022-a8940da240e7/59166574011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01811250-2a41-495c-9b6d-2c2e21781029/tiger_simulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/lufexamuxawime.pdfIn PDF document text
    • https://s3.amazonaws.com/temuxow/gegezava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66114a8e-9b20-4f71-abe3-97064ebe1b3c/cm1_consommer_en_france.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2A 5364 bytes
SHA-256: ff00c0645db01d12a84c33019f40d6194f7ecd356c1fe0098bc8829e4b640cd8
font_01_sfnt_off0000dc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC45 10148 bytes
SHA-256: e32bd2d8611b3ae384ea40185ab32398a23a0d12c356594afbbb378a9532f055

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